THERMOSOLUTAL TRANSPORT PHENOMENA IN LARGE LEWIS NUMBER ELECTROCHEMICAL SYSTEMS

A detailed scaling analysis of transport phenomena by laminar natural convection along a vertical hat plate is made for multiple-component e lectrochemical systems. The convective flow is generated by both horiz ontal temperature and concentration gradients under limiting current c onditions. Both binary and well-supported ternary electrolytes are con sidered. Thicknesses of the thermal and solutal boundary layers, conce ntration variations of all species in each solutal layer, and the heat and mass transport rates are estimated for electrochemical systems wi th large Lewis numbers and buoyancy ratios. The solutal boundary layer structure is constructed for the well-supported electrochemical syste m. The results from the present scaling analysis are compared with ava ilable analytical results and experimental data.